5x^2+2y^2+2xy-14x-10y+17=0,则x=（ ）,y=（ ）

（x^2+xy/x-y)/（xy/x-y)计算 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] 5x^2y-3xy^2+4xy-14xy^2+4xy-2x^2y（化简） (-x-y)(x^2+xy+y^2) 化简x^-y^/x^-2xy+y^ 2*(x-y)²(y-x)(xy) x^2-xy/xy-y^2约分 若x^2+xy+y=14,y^2+xy+x=28,求x+y 如果x^2+xy+y-14,y^@+xy+x=28,求x+y的值. 化简(3x^2-5xy)+{-x^2-[-3xy+2(x^2-xy)+y^2]} (3x的2次方-2xy)/x+(10xy-15y的平方)-(-5y) .(x+y-2)(x+y-2xy)+(xy-1)^2 (x^2-xy)y÷y-x/xy怎么做? x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2 5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2) ((xy+2)(xy-2)-2x²y²+5(xy-y)²)÷(2xy) 代数 x^-y^/ x^-(y-z)^ 除以 x^+2xy+y^/(x-y)^-z^ 乘 x^+xy-xz/x^-xy